﻿using System.Threading;
using DM4;
using sscore;
using System;
using System.Collections.Generic;
using sscore.Utils;
using System.Text.RegularExpressions;
using System.IO;
using sscore.Requests;

namespace AL
{
    public class AL : ModuleBase
    {
        private readonly string _searchUrl;
        private readonly string _offenderLink;
        private readonly string _imageLink;
        private const string StateName = "AL";
        private ResultFile _imagesResultFile;
        readonly string[] _searchParam = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };

        public AL()
        {
            //initialize main system constants
            ModuleCode = "SO_AL";
            Description = "AL Sex Offenders";
            Version = "1.0";

            //for creating sessions
            StartParam = 0;
            StopParam = _searchParam.Length - 1;

            //initialize help 
            AddToHelp(DM4Consts.StartPosition, String.Format("{0}...{1}", StartParam, StopParam));
            AddToHelp(DM4Consts.EndPositon, String.Format("{0}...{1}", StartParam, StopParam));

            AddToHelp(DM4Consts.IsDownload, "true|false");
            AddToHelp(DM4Consts.IsDownloadImg, "true|false");
            AddToHelp(DM4Consts.InsertToDb, "false|true", "(Expected: servername, dbname)");
            AddToHelp(DM4Consts.ServerName, "");
            AddToHelp(DM4Consts.DbName, "");
            AddToHelp(DM4Consts.IsClearDb, "false|true");
            AddToHelp(DM4Consts.TestParam, "false|true");


            RootUrl = "http://dps.alabama.gov/";
            _searchUrl = String.Format("{0}Community/wfSexOffenderSearch.aspx", RootUrl); //http://dps.alabama.gov/Community/wfSexOffenderSearch.aspx
            _offenderLink = String.Format("{0}Community/wfSexOffenderFlyer.aspx?ID={{0}}", RootUrl);
            _imageLink = String.Format("{0}Community/wfGetImage.aspx?Type=2&ID={{0}}", RootUrl);
        }

        private void SetParametersDefaults()
        {
            Params.CreateBooleanParam(DM4Consts.IsDownload, true);
            Params.CreateBooleanParam(DM4Consts.IsDownloadImg, true);
            Params.CreateBooleanParam(DM4Consts.InsertToDb, false);
            Params.CreateBooleanParam(DM4Consts.IsClearDb, false);
            Params.CreateStringParam(DM4Consts.DbName, "");
            Params.CreateStringParam(DM4Consts.ServerName, "");
            Params.CreateIntegerParam(DM4Consts.StartPosition, StartParam);
            Params.CreateIntegerParam(DM4Consts.LastPosition, Params.GetIntegerParam(DmConsts.StartPosition));
            Params.CreateIntegerParam(DM4Consts.EndPositon, StopParam);
            Params.CreateIntegerParam(DM4Consts.LastRecord, 0);
        }

        public override OperationResult Init(IDM4Core iCore, DmTaskParams param)
        {
            //use basic initialization sequence
            base.Init(iCore, param);

            SetParametersDefaults();
            return new OperationResult { Result = DM4Consts.Ok };
        }

        public override OperationResult Start()
        {
            DoWork();
            return new OperationResult { Result = DM4Consts.Ok };
        }

        public override OperationResult DoWork()
        {
            OperationResult or = new OperationResult { Result = DM4Consts.ErrorUnknown };

            if (!Ct.IsCancellationRequested)
            {
                WriteLog("Start parameters:", MessageType.Warning);
                foreach (KeyValuePair<string, string> kvp in Params.GetDictionary()) //get all existing parameters
                    WriteLog(String.Format("Key = {0}, Value = {1}", kvp.Key, kvp.Value), MessageType.Warning);

                if (Params.GetBooleanParam(DM4Consts.IsDownload))
                    Load();

                if (Params.GetBooleanParam(DM4Consts.InsertToDb))
                    if ((Params.GetStringParam(DM4Consts.DbName) == "") || (Params.GetStringParam(DM4Consts.ServerName) == ""))
                    {
                        or.Message = String.Format("{0} or {1} is empty", DM4Consts.DbName, DM4Consts.ServerName);
                        ResultCode = DM4Consts.SessionResultCodeError;
                        ResultMessage = or.Message;
                        UpdateStatus(DmConsts.Error);
                        WriteErrorLog(or.Message); //writting to error and session log   

                        return or;
                    }
                    else
                    {
                        //insert offenders to db 
                        UpdateStatus(DM4Consts.SessionInsertToDb);

                        Offenders.OffInsertToDatabase(StateName, Params.GetStringParam(DmConsts.DbName),
                             Params.GetStringParam(DmConsts.ServerName), ResultDir, Params.GetBooleanParam(DmConsts.IsClearDb),
                             WriteLog);

                    }

                //check if need abort task
                if (Ct.IsCancellationRequested)
                {
                    ResultCode = DM4Consts.SessionResultTerminateByUser;
                    ResultMessage = "Session terminated by user";
                    UpdateStatus(DM4Consts.SessionWait);
                    WriteLog("Session aborted by user", MessageType.Cool);
                }
                else
                {
                    UpdateProgress(1);
                    ResultCode = DM4Consts.SessionResultCodeOk;
                    ResultMessage = String.Format("Session complete, errors : {0}, records : {1}", TaskParams.ErrorCount, TaskParams.RecordCount);
                    UpdateStatus(DM4Consts.SessionComplete);
                    WriteLog("------------Finish----------------", MessageType.Cool);
                }
            }
            else
            {
                ResultCode = DM4Consts.SessionResultTerminateByUser;
                ResultMessage = "Session terminated by user";
                UpdateStatus(DM4Consts.SessionWait);
                WriteLog("Session aborted by user", MessageType.Cool);
            }


            return or;
        }

        private void Load()
        {
            string resultFileName = String.Format("{0}\\{1}.{2}", ResultDir, TaskParams.SessionId, DmConsts.ResultFilesExtension);
            bool workFlag = true;

            ResultFile = new ResultFile(resultFileName, OffendersResult.GetHeader());
            _imagesResultFile = new ResultFile(String.Format("{0}\\{1}_images.{2}", ResultDir, TaskParams.SessionId, DM4Consts.ResultFilesExtension), "FileName|FileUrl");
            try
            {
                while (workFlag)
                {
                    //рабочий цикл
                    string error;

                    try
                    {
                        error = "";  //Required!!  /*if (!String.IsNullOrEmpty(error)) --> restart thread; else --> download finished*/

                        WriteLog("Start download...");
                        Searching();
                    }
                    catch (Exception e)
                    {
                        error = e.Message;
                    }

                    if (!String.IsNullOrEmpty(error))
                    {
                        Thread.Sleep(30000);
                        WriteErrorLog(error);
                        WriteLog("Try continue work...", MessageType.Warning);
                    }
                    else
                    {
                        workFlag = false;  //все нормально откачало, заканчиваем работу
                    }
                }
            }
            finally
            {
                ResultFile.Close();
                _imagesResultFile.Close();
            }
        }

        private string GetCookies()
        {
            WriteLog("get cookies");
            string html = GetRequest.ReturnCookies(_searchUrl, Rpm);

            if (RegExpr.IsMatch(html, @"(?si:THE\s*INFORMATION\s*PROVIDED\s*ON\s*THIS\s*SITE\s*IS\s*INTENDED\s*FOR\s*COMMUNITY\s*SAFETY\s*PURPOSES)"))
                html = PostRequest.RefererWithCookies(_searchUrl, _searchUrl,
                     "__VIEWSTATE=" + HtmlUtils.GetServerVariableValueById("__VIEWSTATE", html) +
                    "&__EVENTVALIDATION=" + HtmlUtils.GetServerVariableValueById("__EVENTVALIDATION", html) +
                    "&ctl00%24BodyArea1%24btnAccept=Accept",
                    Rpm);

            return html;
        }

        private void Searching()
        {
            if (Test)
            {
                Params.SetIntegerParam(DmConsts.LastPosition, Params.GetIntegerParam(DmConsts.StartPosition));
                Params.SetIntegerParam(DmConsts.EndPositon, Params.GetIntegerParam(DmConsts.StartPosition));
            }
            if (Params.GetIntegerParam(DmConsts.EndPositon) > StopParam)
                Params.SetIntegerParam(DmConsts.EndPositon, StopParam);

            string html = GetCookies();
            for (int indSearchParam = Params.GetIntegerParam(DmConsts.LastPosition); indSearchParam <= Params.GetIntegerParam(DmConsts.EndPositon); indSearchParam++)
            {
                //check if need abort task
                if (Ct.IsCancellationRequested)
                    break;

                Params.SetIntegerParam(DmConsts.LastPosition, indSearchParam);
                UpdateProgress();

                WriteLog(String.Format("Process search param [{0}][{1}].",
                    Params.GetIntegerParam(DmConsts.LastPosition),
                    _searchParam[Params.GetIntegerParam(DmConsts.LastPosition)]));

                html = PostRequest.RefererWithCookies(_searchUrl, _searchUrl,
                   "__VIEWSTATE=" + HtmlUtils.GetServerVariableValueById("__VIEWSTATE", html) +
                   "&__EVENTTARGET=" + HtmlUtils.GetServerVariableValueById("__EVENTTARGET", html) +
                   "&__EVENTARGUMENT=" + HtmlUtils.GetServerVariableValueById("__EVENTARGUMENT", html) +
                   "&__EVENTVALIDATION=" + HtmlUtils.GetServerVariableValueById("__EVENTVALIDATION", html) +
                   "&ctl00%24BodyAreaHeader%24txtLastName=" + _searchParam[Params.GetIntegerParam(DmConsts.LastPosition)] +
                   "&ctl00%24BodyAreaHeader%24txtZipCode=&ctl00%24BodyAreaHeader%24txtCity=&ctl00%24BodyAreaHeader%24txtCounty=" +
                   "&ctl00%24BodyAreaHeader%24chkSearchAliasName=off" +
                   "&ctl00%24BodyAreaHeader%24btnSearch=Search&ctl00%24BodyArea1%24txtIdentifier=",
                    Rpm);
                ParseResultPage(html);
            }
        }

        private void ParseResultPage(string html)
        {
            html = HtmlUtils.KillSpace(HtmlUtils.ReplaceSpecSymbols(html.Replace("\r\n", " ").Replace("\t", " ").Replace("\r", " ").Replace("\n", " ")));

            string htmlOffendersCount = RegExpr.Parse(html, @"(?si:Total Sex Offenders found:(.*?)</span>)");

            if (string.IsNullOrEmpty(htmlOffendersCount) && !RegExpr.IsMatch(html, @"(?si:Sorry, no Sex Offenders were found)"))
                throw new Exception(String.Format("Result page: {0}{1}{2}", DmConsts.ExcNeedRestart, Environment.NewLine, html));

            MatchCollection mc = RegExpr.ParseMatchCollection(html, @"(?si:wfSexOffenderFlyer.aspx\x3FID=([^""=]*?)"")");
            WriteLog(String.Format("found [{0}] matches", mc.Count));
            if (mc.Count == 0 && !RegExpr.IsMatch(html, @"(?si:Sorry, no Sex Offenders were found)"))
                throw new Exception(String.Format("Result page: {0}{1}{2}", DmConsts.ExcNeedRestart, Environment.NewLine, html));

            List<string> list = new List<string>();
            foreach (Match matchLoc in mc)
                if (!list.Contains(matchLoc.Groups[1].Value))
                    list.Add(matchLoc.Groups[1].Value);

            WriteLog(String.Format("found [{0}] id[s]", list.Count));

            for (int i = Params.GetIntegerParam(DmConsts.LastRecord); i < list.Count; i++)
            {
                //check if need abort task
                if (Ct.IsCancellationRequested)
                    break;

                Params.SetIntegerParam(DmConsts.LastRecord, i);
                string lookupKey = list[i];
                string offenderHtml = GetRequest.WithCookies(String.Format(_offenderLink, lookupKey), Rpm);
                WriteLog(String.Format("ParseOffender [{0}][{1}]", Params.GetIntegerParam(DmConsts.LastRecord), lookupKey));

                if (!RegExpr.IsMatch(offenderHtml, @"(?si:form method=""post"" action=""wfSexOffenderFlyer)")
                    || !RegExpr.IsMatch(offenderHtml, @"(?si:Alabama Department of Public Safety)"))
                    throw new Exception("Offenders page: " + DmConsts.ExcNeedRestart);

                ParseOffender(offenderHtml, lookupKey);
                UpdateRecordCount(1);
            }
            Params.SetIntegerParam(DmConsts.LastRecord, 0);
        }

        private void ParseOffender(string offenderHtml, string lookupKey)
        {
            offenderHtml = HtmlUtils.KillSpace(HtmlUtils.ReplaceSpecSymbols(offenderHtml.Replace("\r\n", " ").Replace("\t", " ").Replace("\r", " ").Replace("\n", " ")));
            using (OffendersResult or = new OffendersResult())
            {
                or.Source_State = StateName;
                or.Source_id = lookupKey;
                or.offenderLink = String.Format(_offenderLink, lookupKey);

                or.fullname = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_txtName"">(.*?)</span>)").Trim();
                or.Ethnicity = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_txtRace"">(.*?)</span>)").Trim();
                or.sex = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_txtSex"">(.*?)</span>)").Trim();
                or.Birthdate = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_txtDOB"">(.*?)</span>)").Trim();
                or.height = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_txtHeight"">(.*?)</span>)").Trim();
                or.weight = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_txtWeight"">(.*?)</span>)").Trim();
                or.eye_color = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_txtEyeColor"">(.*?)</span>)").Trim();
                or.hair_color = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_txtHairColor"">(.*?)</span>)").Trim();
                or.Release_date = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_lblReleaseDate"">(.*?)</span>)").Trim();

                or.Address = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_rptPhysicalAddress_lblAddress[^<>]*?"">(.*?)</span>)").Trim();
                or.Address += "@" + RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_rptPhysicalAddress_lblCity[^<>]*?"">(.*?)</span>)").Trim();
                or.County = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_rptPhysicalAddress_lblCounty[^<>]*?"">(.*?)</span>)").Trim();
                or.Address_date = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_rptPhysicalAddress_lblAddressLastVerified[^<>]*?"">(.*?)</span>)").Trim();
                or.registered = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_rptPhysicalAddress_lblRegistrationDate[^<>]*?"">(.*?)</span>)").Trim();
                or.Employer = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_rptWorkDetail_lblOccupation[^<>]*?"">(.*?)</span>)").Trim();
                or.waddress = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_rptWorkDetail_lblAddress[^<>]*?"">(.*?)</span>)").Trim();
                or.Wcity = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_rptWorkDetail_lblCity[^<>]*?"">(.*?)</span>)").Trim();
                or.wcounty = RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_rptWorkDetail_lblCounty[^<>]*?"">(.*?)</span>)").Trim();

                foreach (Match matchLoc in RegExpr.ParseMatchCollection(offenderHtml, @"(?si:BodyArea1_rptSMT_lblSMT[^<>]*?>(.*?)</span>)"))
                    or.marks += matchLoc.Groups[1].Value + ";";

                or.Vehicle = "Vehicle; Tag~";
                int i = 0;
                foreach (Match matchLoc in RegExpr.ParseMatchCollection(offenderHtml, @"(?si:BodyArea1_rptVehicleDetail_lblVehicle[^<>]*?"">(.*?)</span>)"))
                {
                    or.Vehicle += matchLoc.Groups[1].Value + ";";
                    or.Vehicle += RegExpr.Parse(offenderHtml, @"(?si:BodyArea1_rptVehicleDetail_[^<>]*?"">(.*?)</span>)").Trim() + "~";
                    i++;
                }
                if (or.Vehicle == "Vehicle; Tag~") or.Vehicle = "";

                foreach (Match matchLoc in RegExpr.ParseMatchCollection(offenderHtml, @"(?si:BodyArea1_rptAliasName_[^<>]*?>(.*?)</span>)"))
                    or.AKA += matchLoc.Groups[1].Value + ";";

                or.Crime = "Date of Offense; Conviction Date; Sex Crime; Crime Location; Description; UCR Code~";

                i = 0;
                foreach (Match matchLoc in RegExpr.ParseMatchCollection(offenderHtml, @"(?si:BodyArea1_rptOffense_lblDateOfOffense[^<>]*?"">(.*?)</span>)"))
                {
                    or.Crime += matchLoc.Groups[1].Value + ";";
                    or.Crime += RegExpr.Parse(offenderHtml, @"(?si:lblConvictionDate[^<>]*?"">(.*?)</span>)").Trim() + ";";
                    or.Crime += RegExpr.Parse(offenderHtml, @"(?si:lblSexCrime[^<>]*?"">(.*?)</span>)").Trim() + ";";
                    or.Crime += RegExpr.Parse(offenderHtml, @"(?si:lblCrimeLocation[^<>]*?"">(.*?)</span>)").Trim() + ";";
                    or.Crime += RegExpr.Parse(offenderHtml, @"(?si:lblDescription[^<>]*?"">(.*?)</span>)").Trim() + ";";
                    or.Crime += RegExpr.Parse(offenderHtml, @"(?si:lblUCRCode[^<>]*?"">(.*?)</span>)").Trim() + "~";
                    i++;
                }

                if (Params.GetBooleanParam(DmConsts.IsDownloadImg)
                    && RegExpr.IsMatch(offenderHtml, String.Format(@"(?si:wfGetImage.aspx\?Type=2[^<>]*?ID={0})", or.Source_id)))
                {
                    or.Image_ID = Guid.NewGuid() + ".jpg";
                    or.ImageLink = String.Format(_imageLink, or.Source_id);
                    try
                    {
                        Offenders.DownloadImageWithExceptions(_imagesResultFile,
                            String.Format("{0}\\{1}\\{2}", ResultDir, DmConsts.PhotosDir, or.Image_ID),
                            or.ImageLink, TaskParams.SessionId);
                    }
                    catch (Exception ex)
                    {
                        //если произошла загрузка битой картинки
                        if (ex.Message == "Parameter is not valid." && ex.StackTrace.StartsWith("   at System.Drawing.Bitmap..ctor(String filename)"))
                        {
                            or.Image_ID = "";
                            or.ImageLink = "";
                        }
                        else
                            throw new Exception("Error occured while downloading image: " + or.ImageLink, ex);
                    }
                }
                if (or.Image_ID != "" && !File.Exists(String.Format("{0}\\{1}\\{2}", ResultDir, DmConsts.PhotosDir, or.Image_ID)))
                    throw new Exception(DmConsts.ExcImgNotFound);

                ResultFile.Write(or.GetValues());
            }
        }

        private void UpdateProgress()
        {
            if (Params.GetIntegerParam(DmConsts.StartPosition) > Params.GetIntegerParam(DmConsts.EndPositon))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.StartPosition), Params.GetIntegerParam(DmConsts.EndPositon),
                    DmConsts.StartPosition, DmConsts.EndPositon));
            if (Params.GetIntegerParam(DmConsts.LastPosition) > Params.GetIntegerParam(DmConsts.EndPositon))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.LastPosition), Params.GetIntegerParam(DmConsts.EndPositon),
                    DmConsts.StartPosition, DmConsts.EndPositon));
            if (Params.GetIntegerParam(DmConsts.StartPosition) > Params.GetIntegerParam(DmConsts.LastPosition))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.StartPosition), Params.GetIntegerParam(DmConsts.LastPosition),
                    DmConsts.StartPosition, DmConsts.LastPosition));
            UpdateProgress(((double)(Params.GetIntegerParam(DmConsts.LastPosition) - Params.GetIntegerParam(DmConsts.StartPosition))) / (Params.GetIntegerParam(DmConsts.EndPositon) - Params.GetIntegerParam(DmConsts.StartPosition) + 1));
        }
    }
}
